Circuit Descriptions
7.
7.4
Front-End Analogue and DVB-T, DVB-C
reception
7.4.1
DVB-T/C DTV
The Front-End for DVB-T/C DTV consist of the following key
components:
•
TUNER DVB-T/T2/C, PAL/SECAM TDSY-G230D
•
MT5580MPOI PBGA-511
Below find a block diagram of the front-end application for
DVB-T/C DTV.
Figure 7-5 Front-End DVB-T/C DTV block diagram
7.4.2
DVB-T2 DTV
The Front-End for DVB-T/C DTV consist of the following key
components:
•
TUNER DVB-T/T2/C, PAL/SECAM TDSY-G230D
•
DEMODULATOR MT5136AN QFN48
•
MT5580MPOI PBGA-511
Below find a block diagram of the front-end application for
DVB-T2 DTV.
Figure 7-6 Front-End DVB-T2 DTV block diagram
7.5
Front-End DVB-S(2) reception
The Front-End for the DVB-S(2) application consist of the
following key components:
•
AVL6211LA LQFP-64
•
MT5580MPOI PBGA-511
•
TDQS-A901F
Below find a block diagram of the front-end application for
DVB-S(2) reception.
Figure 7-7 Front-End block diagram DVB-S(2) reception
This application supports the following protocols:
•
Polarization selection via supply voltage (18 V = horizontal,
13 V = vertical)
•
Band selection via “toneburst” (22 kHz): tone “on” = “high”
band, tone “off” = “low” band
•
Satellite (LNB) selection via DiSEqC 1.0 protocol
•
Reception of DVB-S (supporting QPSK encoded signals)
and DVB-S2 (supporting QPSK, 8PSK, 16APSK and
32APSK encoded signals), introducing LDPC low-density
parity check techniques.
7.6
HDMI
Refer to figure
Figure 7-8 HDMI input configuration
The following HDMI connector can be used:
•
HDMI 1: HDMI input (TV digital interface support HDCP)
with digital audio / PC DVI input/ARC
•
HDMI 2: HDMI input (TV digital interface support HDCP)
with digital audio / PC DVI input
•
HDMI input (TV digital interface support HDCP) with digital
audio / PC DVI input
7.7
Video and Audio Processing - MTK5580MPOI
The MTK5580MPOI is the main audio and video processor (or
System-on-Chip) for this platform. It has the following features:
•
Multi-standard digital video decoder (MPEG-2, H.264,
MPEG-4)
•
Integrated DVB-T/DVB-C/DVB-S channel decoder
•
Integrated CI+
•
Integrated motion accurate picture processing
•
High definition ME/MC
•
Extended colour gamut and colour booster
•
Integrated USB2.0 host controller
•
Improved MPEG artefact reduction
•
Security for customers own code/settings (secure flash).
IF
X
X
IF_AGC is no use
RF_AGC
RF_AGC
RF_AGC
MTK5580
IF_AGC
TDSY-G230D
I
2
C
I
2
C
19430_203_130129.eps
130129
IF
TS DATA
X
RF_AGC
RF_AGC
RF_AGC
MTK5580
T2 demod
MT5136AN
IF_AGC
TDSY-G230D
I
2
C
I
2
C
19430_204_130129.eps
130129
19430_205_130129.eps
130129
Tuner I
2
C
System I
2
C
TS DATA
IP/IN/OP/ON
Tuner I
2
C
S2 Tuner
MT5580
MCU ARM
MPEG/video/audio
Decoder
Scaling
Video enhancement
3D comb
LVDS Transmitter
HDMI 1.4
ADC
H.264
Build-in HDMI SWITCH × 3
Mini LVDS Transmitter
ATD build - in
LNB Power
AVL6211
USB x2
Head phone Amp
DVB-T/C Demod
19430_206_130129.eps
130129
MT5580
HDMI1
HDMI2
HDMI SIDE
U504
U507
U509
BRX
ARX
CRX